Southern Tagalog

Southern Tagalog
Timog Katagalugan
Former region of the Philippines
1965–2002

Location within the Philippines
CapitalQuezon City (Regional center)
Population 
 2000
11,793,655
History 
 Established
1 January 1965
 Disestablished
17 May 2002
Political subdivisions
Succeeded by
Calabarzon
Mimaropa
Today part of

Southern Tagalog (Filipino: Timog Katagalugan), designated as Region IV, was an administrative region in the Philippines that comprised the current regions of Calabarzon and Mimaropa, the province of Aurora in Central Luzon, and most of the National Capital Region. It was the largest region in the Philippines in terms of both land area and population. After its partition on May 17, 2002, Southern Tagalog continues to exist as a cultural-geographical region.

The region was bordered by Manila Bay and the South China Sea to the west, Lamon Bay and the Bicol Region to the east, the Tayabas Bay, Sibuyan Sea, and Balabac Strait, where it shared a maritime border with Sabah, Malaysia, to the south, and Central Luzon to the north.